ASTROSAT CZTI

Data Quality Report

Orbit 21341

Creation date: 2024-06-27T18:26:36.585017
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_108T01_9000003146_21341cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21341cztM0_level2_quad_clean.evt
Size (bytes)521,680,320106,450,560
Size497.5 MB 101.5 MB
Events in quadrant A3,861,626681,216
Events in quadrant B3,675,777698,314
Events in quadrant C3,577,459662,922
Events in quadrant D4,166,039650,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163072
B0159742
C0156422
D0176032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7638490.641529%
B7637941.230850%
C7637951.243944%
D7637530.693990%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8003 7640 0 0 0.00% 0.00%
B 8002 7639 14 14 0.17% 0.18%
C 8002 7639 0 0 0.00% 0.00%
D 8002 7639 15 15 0.19% 0.20%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 168 347162 1901.3 906 887 182.1
A 5 16 11457 58.04 906 887 182.1
A 13 254 10512 52.85 906 887 182.1
B 3 64 61494 349.32 909 889 173.5
B 0 230 22575 125.0 909 889 173.5
B 12 111 21660 119.72 909 889 173.5
C 14 238 134863 654.67 875 881 204.7
C 8 128 14234 65.25 875 881 204.7
C 7 247 8124 35.39 875 881 204.7
D 1 52 543715 2509.45 882 858 216.3
D 12 235 164044 754.36 882 858 216.3
D 13 172 55447 252.35 882 858 216.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter